RFC 1073 (rfc1073) - Page 1 of 4

Telnet window size option

Alternative Format: Original Text Document
Network Working Group                                        D. Waitzman
Request For Comments: 1073                                       BBN STC
                                                            October 1988

                       Telnet Window Size Option

Status of this Memo

   This RFC describes a proposed Telnet option to allow a client to
   convey window size to a Telnet server.  Distribution of this memo is
   unlimited.

1. Command Name and Option Code

      Name = NAWS (Negotiate About Window Size)

      Code = 31

2. Command Meanings

      IAC WILL NAWS

         Sent by the Telnet client to suggest that NAWS be used.

      IAC WON'T NAWS

         Sent by the Telnet client to refuse to use NAWS.

      IAC DO NAWS

         Sent by the Telnet server to suggest that NAWS be used.

      IAC DON'T NAWS

         Sent by the Telnet server to refuse to use NAWS.

      IAC SB NAWS <16-bit value> <16-bit value> IAC SE

         Sent by the Telnet client to inform the Telnet server of the
         window width and height.

   The window size information is conveyed via this option from the
   Telnet client to the Telnet server.  The information is advisory.
   The server may accept the option, but not use the information that is
   sent.

   The client and server negotiate sending the window size information
   using the standard Telnet WILL/DO/DON'T/WON'T mechanism.  If the



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